NINAU
ʻO kahi hiʻohiʻona o ka Silicon Carbide Ceramics
2023-02-17

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ʻO Silicon Carbide, ka mea i kapa ʻia ʻo carborundum, he mea hoʻohui silicon-carbon. ʻO kēia pūhui kemika he mea ia o ka mineral moissanite. Ua kapa ʻia ke ʻano kūlohelohe o Silicon Carbide ma hope o Dr Ferdinand Henri Moissan, he lāʻau lapaʻau Farani. Loaʻa ka Moissanite i nā minuke i nā meteorites, kimberlite, a me corundum. ʻO kēia ke ʻano o ka hana nui ʻana o ka Silicon Carbide. ʻOiai he paʻakikī ka loaʻa ʻana o Silicon Carbide ma ka Honua, ua nui ma ka lewa.

 

Nā ʻano like ʻole o Silicon Carbide

Hana ʻia nā huahana Silicon Carbide i ʻehā mau ʻano no ka hoʻohana ʻana i nā noi ʻenehana ʻoihana. Aia kēia mau mea

Kāpena Silika Sintered (SSiC)

Reaction Bonded Silicon Carbide (RBSiC a i ʻole SiSiC)

Nitride paʻa Silicon Carbide (NSiC)

ʻO ka ʻāwili silikoni hoʻoheheʻe hou ʻia (RSiC)

ʻO nā ʻokoʻa ʻē aʻe o ka paʻa me SIALON i hoʻopaʻa ʻia ʻo Silicon Carbide. Aia kekahi CVD Silicon Carbide (CVD-SiC), he ʻano maʻemaʻe loa ia o ka pūhui i hana ʻia e ka hoʻoheheʻe ʻana i ka mahu.

No ka hoʻopaʻa ʻana i ka Silicon Carbide, pono e hoʻohui i nā mea kōkua sintering e kōkua i ka hoʻokumu ʻana i kahi ʻano wai i ka mahana o ka sintering, e ʻae ai i nā huaʻai Silicon Carbide e hoʻopaʻa pū.

 

ʻO nā waiwai nui o Silicon Carbide

Kiʻekiʻe thermal conductivity a me ka haʻahaʻa coefficient o ka wela hoʻonui. Hāʻawi kēia hui pū ʻana o nā waiwai i ke kū kūʻokoʻa o ka haʻalulu wela, e hana ana i nā seramika Silicon Carbide e pono ai i nā ʻano ʻoihana. He semiconductor hoʻi ia a ʻo kāna mau waiwai uila e kūpono ia no ka nui o nā noi. Ua ʻike ʻia ʻo ia no kona paʻakikī loa a me ka pale ʻana i ka corrosion.

 

Nā noi o Silicon Carbide

Hiki ke hoʻohana ʻia ʻo Silicon Carbide i nā ʻano ʻoihana.


ʻO kona paʻakikī kino e kūpono ia no nā kaʻina hana abrasive e like me ka wili, honing, sandblasting, a me ka ʻoki wai.


ʻO ka hiki o Silicon Carbide ke kū i nā wela kiʻekiʻe loa me ka ʻole o ka haki ʻana a i ʻole ka deformation i hoʻohana ʻia i ka hana ʻana i nā disc brake ceramic no nā kaʻa haʻuki. Hoʻohana ʻia ʻo ia ma ke ʻano he mea kaua i loko o nā ʻaʻahu pōkā a me ke apo hoʻopaʻa hoʻopaʻa ʻana no nā sila aʻa pump, kahi e holo pinepine ai i nā wikiwiki kiʻekiʻe e pili ana me kahi sila Silicon Carbide. ʻO ka hana wela wela kiʻekiʻe o Silicon Carbide, hiki iā ia ke hoʻopau i ka wela frictional i hana ʻia e kahi pānaʻi ʻōpala, he pōmaikaʻi nui i kēia mau noi.


Ma muli o ke kiʻekiʻe o ka paʻakikī o ka ʻili o ka mea, hoʻohana ʻia ia i nā noi ʻenehana he nui kahi e koi ʻia ai ke kiʻekiʻe o ke kūʻē ʻana i ka sliding, erosive a me ka corrosive. ʻO ka maʻamau, pili kēia i nā ʻāpana i hoʻohana ʻia i loko o nā pamu a i ʻole nā ​​​​vala i nā noi ʻaila, kahi e hōʻike ai nā mea metala maʻamau i ka nui o ka ʻaʻahu e alakaʻi ana i ka hiki ʻole.


ʻO nā waiwai uila koʻikoʻi o ka pūhui ma ke ʻano he semiconductor he mea kūpono ia no ka hana ʻana i nā diodes ultrafast a kiʻekiʻe-voltage light-emitting diodes, MOSFET, a me thyristors no ka hoʻololi mana kiʻekiʻe.


ʻO kona helu haʻahaʻa o ka hoʻonui ʻana i ka wela, ka paʻakikī, ka ʻoʻoleʻa, a me ka conductivity thermal e kūpono ia no nā aniani telescope astronomical. ʻO ka pyrometry filament lahilahi kahi ʻenehana ʻike e hoʻohana ana i nā filaments Silicon Carbide e ana i ka mahana o nā kinoea.


Hoʻohana ʻia ia i nā mea hoʻomehana e kū pono i nā wela kiʻekiʻe loa. Hoʻohana ʻia ia e hāʻawi i ke kākoʻo kūkulu ʻana i nā reactors nuklea hoʻoluʻu kiʻekiʻe.


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